Is yours the yellow model? There should be two large "half buttons" blow the handle in the front. One turns the vacuum on without the brush. the other turns it on with the brush. ...
Dyson DC25 All Floors Bagless Upright Vacuum

Beater brush won't run - Dyson DC25 All Floors Bagless Upright Vacuum

Brush does not spin - Dyson DC25 All Floors Bagless Upright Vacuum

Here's a parts diagram for the machine. It took me a bit to find it. Dyson doesn't want to give any kind of parts diagrams or such that I could find. Anyway, I'd say your drive belt is probably either broken or slipping. More than likely the first on ...
Dyson DC25 All Floors Bagless Upright Vacuum

Hi Chett,I'm sorry to hear you're having difficulty with your DC25. If the switch doesn't seem to be working correctly, I'd encourage you to get in touch with us directly as we'd appreciate the opportunity to provide further assistance. ...
Dyson DC25 All Floors Bagless Upright Vacuum